21201222022022 has 8 divisors (see below), whose sum is σ = 36344952037776. Its totient is φ = 9086238009432.

The previous prime is 21201222021979. The next prime is 21201222022051. The reversal of 21201222022022 is 22022022210212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21201222021985 and 21201222022003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757186500773 + ... + 757186500800.

It is an arithmetic number, because the mean of its divisors is an integer number (4543119004722).

Almost surely, 2^{21201222022022} is an apocalyptic number.

21201222022022 is a deficient number, since it is larger than the sum of its proper divisors (15143730015754).

21201222022022 is a wasteful number, since it uses less digits than its factorization.

21201222022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514373001582.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21201222022022 its reverse (22022022210212), we get a palindrome (43223244232234).

The spelling of 21201222022022 in words is "twenty-one trillion, two hundred one billion, two hundred twenty-two million, twenty-two thousand, twenty-two".